CN211926555U

CN211926555U - Shuttle-type kiln

Info

Publication number: CN211926555U
Application number: CN202020542339.5U
Authority: CN
Inventors: 于长江; 王兆敏; 路朋; 张凯平; 胡金标
Original assignee: Shandong Maifeng New Material Science And Technology Co ltd
Current assignee: Shandong Maifeng New Material Science And Technology Co ltd
Priority date: 2020-04-13
Filing date: 2020-04-13
Publication date: 2020-11-13
Anticipated expiration: 2030-04-13

Abstract

The utility model discloses a shuttle formula kiln relates to kiln technical field. The kiln comprises a kiln body and a kiln car, wherein the top wall of the kiln body is fixedly connected with a smoke exhaust pipe, and a section of the smoke exhaust pipe from an inlet of the smoke exhaust pipe is spiral; the kiln comprises a kiln body, and is characterized by further comprising a heat insulation device, wherein the heat insulation device is sleeved outside the spiral section of the flue gas exhaust pipe, the bottom surface of the heat insulation device is fixedly connected to the upper surface of the kiln body, a heat insulation top cover is fixedly arranged on the upper portion of the heat insulation device, a first heat insulation layer, a second heat insulation layer and a third heat insulation layer are arranged in the middle of the heat insulation device from inside to outside, the first heat insulation layer is heat insulation sand, the second heat insulation layer is heat insulation cotton, and the third. The utility model is provided with the spiral pipe body, thereby reducing the heat loss at the smoke outlet of the kiln body; the heat insulation device is arranged to maintain the temperature stability of the flue gas outlet of the kiln body, and further maintain the uniformity and stability of the temperature and pressure inside the kiln body.

Description

Shuttle-type kiln

Technical Field

The invention relates to the technical field of kilns, in particular to a shuttle-type kiln.

Background

The shuttle kiln is a kiln fired intermittently, is similar to the structure of a matchbox, is pushed into the kiln to be fired, is pulled out in the opposite direction after being fired, discharges the fired products, is similar to a shuttle, and is called as the shuttle kiln.

In the process of roasting the rare earth polishing powder, the roasting temperature is high, the time period is long, the shuttle kiln needs to continuously discharge smoke, and the pressure in the kiln is kept stable. The smoke discharging process in the prior art has a plurality of problems. Firstly, the smoke outlet pipe has high attachment temperature, which affects the working environment of workers. Secondly, in a section of smoke outlet pipeline close to the kiln body, the heat of the smoke is continuously dissipated to the outside through heat conduction, convection, radiation and the like, so that the heat dissipation and the temperature unevenness inside the kiln body are caused, and the product quality is influenced. Finally, the flue gas velocity is fast, which causes the heat loss in the kiln body to be fast, and causes the temperature and pressure in the kiln body to be uneven and unstable.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a reduce the heat of the exhanst gas outlet department of the kiln body and scatter and disappear, maintain kiln body temperature and stable shuttle kiln of pressure.

In order to solve the above problem, the technical scheme of the utility model is that:

a shuttle kiln comprises a kiln body and a kiln car, wherein a smoke exhaust pipe is fixedly connected to the top wall of the kiln body, one end, far away from the kiln body, of the smoke exhaust pipe is fixedly connected with a draught fan, the smoke exhaust pipe comprises a smoke exhaust pipe inlet and a smoke exhaust pipe outlet, a section of the smoke exhaust pipe, starting from the smoke exhaust pipe inlet, is spiral, the whole section of the spiral pipe, starting from the smoke exhaust pipe inlet, of the smoke exhaust pipe is cylindrical, and the diameter of the cylinder, formed by a section of the spiral pipe, starting from the smoke exhaust pipe inlet, of the smoke exhaust pipe is larger than twice the diameter of the pipe of the smoke exhaust pipe;

still include heat-proof device, heat-proof device overcoat in one section body of spiral of tub of discharging fume, heat-proof device bottom surface fixed connection in the upper surface of kiln body, the fixed thermal-insulated top cap that is provided with in heat-proof device upper portion, heat-proof device middle part is provided with first insulating layer, second insulating layer and third insulating layer from inside to outside, first insulating layer is heat preservation sand, the second insulating layer is the heat preservation cotton, the third insulating layer is fire-resistant insulating brick.

Furthermore, the exhaust pipe is close to one section of pipe body fixedly connected with heat preservation of draught fan, the heat preservation overcoat in the pipe body of exhaust pipe.

Furthermore, the heat preservation layer is arranged on one side, close to the kiln body, of the induced draft fan.

Further, the heat insulation device is in a round table shape, and the diameter of the bottom surface of the heat insulation device is larger than that of the upper portion of the heat insulation device.

Further, still include fixing device, fixing device includes a plurality of fixed strips, the one end fixed connection of fixed strip in heat-proof device's lateral wall, the other end fixed connection of fixed strip in the lateral wall of the kiln body, the fixed strip slope is in the horizontal plane setting.

Further, a flashboard is fixedly connected to the smoke exhaust pipe.

Furthermore, a smoke exhaust valve is fixedly connected to the smoke exhaust pipe.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model is provided with the spiral pipe body, thereby reducing the heat loss at the smoke outlet of the kiln body;

2. the utility model is provided with a heat insulation device, which maintains the temperature stability at the flue gas outlet of the kiln body, and further maintains the uniformity and stability of the temperature and pressure in the kiln body;

3. the utility model discloses be provided with the heat preservation, reduce exhaust pipe calorific loss, improve heat utilization efficiency.

Drawings

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the heat insulation apparatus of the present invention;

FIG. 3 is a schematic view of the spiral pipe of the present invention;

wherein, 1 is a kiln body; 2, kiln car; 3 is a smoke exhaust pipe; 4 is a draught fan; 5 is a heat insulation device; 6 is a heat insulation top cover; 7 is a first heat-insulating layer; 8 is a second heat insulation layer; 9 is a third heat insulation layer; 10 is a heat-insulating layer; and 11 is a fixing strip.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the functions of the present invention easy to understand and understand, the present invention is further explained by combining the following specific drawings.

Example (b):

a shuttle kiln comprises a kiln body 1 and a kiln car 2, wherein a smoke exhaust pipe 3 is fixedly connected to the top wall of the kiln body 1, and a flashboard and a valve are fixedly connected to the smoke exhaust pipe 3. The gate plate and the valve are used for opening and closing the smoke exhaust pipe 3. One end of the smoke exhaust pipe 3 far away from the kiln body 1 is fixedly connected with a draught fan 4. The induced draft fan 4 is used for discharging fume. The smoke exhaust pipe 3 comprises a smoke exhaust pipe 3 inlet and a smoke exhaust pipe 3 outlet, the smoke exhaust pipe 3 inlet is fixedly connected with the top wall of the kiln body 1, and the smoke exhaust pipe 3 outlet is arranged at the far end. Usually, the one end body of 3 entrys of tub of discharging fume is the straight tube, and when the flue gas was through the straight tube, the heat of flue gas gived off to the external world through the pipe wall, influences the homogeneity of the inside temperature of the kiln body 1 and pressure, and influences operational environment. The section of the pipe body of the smoke exhaust pipe 3 starting from the inlet of the smoke exhaust pipe 3 is set to be spiral, the section of the spiral pipe body of the smoke exhaust pipe 3 starting from the inlet of the smoke exhaust pipe 3 is integrally cylindrical, and the diameter of the cylinder formed by the section of the spiral pipe body of the smoke exhaust pipe 3 starting from the inlet of the smoke exhaust pipe 3 is larger than twice of the diameter of the pipe body of the smoke exhaust pipe 3. The spiral rising pipe body which is cylindrical on the whole increases the length of a flue gas flow channel, the spiral rising pipe body enables the pipe bodies to have a close distance, and heat dissipated by flue gas is gathered around the pipe bodies and is not easy to discharge.

Still be provided with heat-

proof device

5, 5 outer cover of heat-proof device in one section body of spiral of tub 3 of discharging fume, 5 bottom surfaces of heat-proof device fixed connection in the upper surface of

kiln body

1, 5 upper portions of heat-proof device are fixed and are provided with thermal-insulated

top cap

6, 5 middle parts of heat-proof device are provided with first insulating layer 7 from inside to outside, second insulating layer 8 and third insulating layer 9, first insulating layer 7 is heat preservation sand, second insulating layer 8 is the heat preservation cotton, third insulating layer 9 is fire-resistant insulating brick.

The heat insulation device 5 isolates the heat of the spiral pipe body from the outside, and when the heat of the flue gas in the pipeline is not dissipated as much as possible, the temperature of the flue gas in the pipeline is kept stable, and then the stability of the temperature and the pressure in the kiln body 1 is ensured. The first heat insulation layer 7 is heat insulation sand, and the heat insulation sand can be matched with the shape of the spiral pipe body to fill the gap. The heat insulation top cover 6 is made of refractory bricks. The heat insulation device 5 is made of light materials.

Further, the heat insulation device 5 is in a shape of a circular truncated cone, and the diameter of the bottom surface of the heat insulation device 5 is larger than that of the upper part.

The kiln heat insulation device is characterized by further comprising a fixing device, the fixing device comprises a plurality of fixing strips 11, one ends of the fixing strips 11 are fixedly connected to the side wall of the heat insulation device 5, the other ends of the fixing strips 11 are fixedly connected to the side wall of the kiln body 1, and the fixing strips 11 are arranged in a mode of inclining to the horizontal plane. The fixing means are used to support the thermal insulation means 5. The fixing strip 11 is a stainless steel strip.

One section body fixedly connected with heat preservation 10 of tub 3 of discharging fume near draught fan 4, heat preservation 10 overcoat is in the body of tub 3 of discharging fume. Further, the heat preservation layer 10 is arranged on one side of the induced draft fan 4 close to the kiln body 1. The heat preservation layer 10 is used for preserving heat of smoke heat in the smoke exhaust pipe 3. The heat-insulating layer is built by refractory bricks.

It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that various changes and modifications may be made without departing from the spirit and scope of the invention, and such changes and modifications fall within the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The shuttle kiln is characterized by comprising a kiln body and a kiln car, wherein a smoke exhaust pipe is fixedly connected to the top wall of the kiln body, an induced draft fan is fixedly connected to one end, far away from the kiln body, of the smoke exhaust pipe, the smoke exhaust pipe comprises a smoke exhaust pipe inlet and a smoke exhaust pipe outlet, a section of the smoke exhaust pipe, starting from the smoke exhaust pipe inlet, is spiral, a section of the spiral pipe, starting from the smoke exhaust pipe inlet, of the smoke exhaust pipe is cylindrical as a whole, and the diameter of a cylinder formed by a section of the spiral pipe, starting from the smoke exhaust pipe inlet, of the smoke exhaust pipe is larger than twice the diameter of the smoke exhaust pipe;

2. The shuttle kiln as claimed in claim 1, wherein a section of the flue gas exhaust pipe adjacent to the induced draft fan is fixedly connected with a heat insulating layer, and the heat insulating layer is sleeved on the flue gas exhaust pipe.

3. The shuttle kiln as claimed in claim 2, wherein the insulation layer is disposed on a side of the induced draft fan adjacent to the kiln body.

4. The shuttle kiln as claimed in claim 1, wherein the insulation is frustoconical, the diameter of the bottom surface of the insulation being greater than the diameter of the upper portion.

5. The shuttle kiln as claimed in claim 1, further comprising a fixing device, wherein the fixing device comprises a plurality of fixing strips, one end of each fixing strip is fixedly connected to the side wall of the heat insulation device, the other end of each fixing strip is fixedly connected to the side wall of the kiln body, and the fixing strips are arranged obliquely to the horizontal plane.

6. The shuttle kiln as claimed in claim 1, wherein the smoke exhaust pipe is fixedly connected with a damper.

7. The shuttle kiln as claimed in claim 1, wherein the smoke exhaust pipe is fixedly connected with a smoke exhaust valve.